Door-bell



(Model.) J. W. JOHNSON.y

Door Bell. l No. 238,398. Patented March 1,1881.

726111. flaws.

rre States artnr JOSEPH WV. JOHNSON, OF.NEW BRITAIN, CONNECTICUT,ASSIGNOR TO WIL- LIAM M. GRISGOM, MATTHAN HABBSTER, AND WILLIAMHABBSTER, OF

READING, PENNSYLVANIA.

DOOR-BELL.

SPECIFICATION forming part of Letters Patent No. 238,398, dated March 1,1881.

Application tiled December 14, 1880.

To all whom t may concern:

Be it known that I, Josnrn W. JOHNSON, a citizen ot' the United States,residing at New Britain, Hartford county, State of Connecticut, haveinvented certain Improvements in Gongs for Doors, Src., of which thefollowing is a specification.

My invention relates to improvements in that class of gon gs in which aplate carrying a bell is also provided with mechanism through the mediumof which the bell may be struck, and the main object of lnyinvention isto provide the gong with such striking appliances that on moving theoperating device in one direction the bell will be struck, and after theoperatin g device has been released there will be a second and automaticblow on the bell as the operatin g device recovers its normal position.

A further object of my invention is the economical manufacture ofthegong.

In the accompanying drawings, Figures 1, 2, 3, and 4 are views showingthe striking works ofthe gong in different positions; Fig. 5, a verticalsection ot' the gong on the line l 2, Fig. l, showing the gong attachedto a door or other object and a handle for operating the gong; Fi 6,part ot' the escutcheonplate for the operating-handle; Fig. 7, aperspective view of the operating-handle drawn to a reduced scale, andFig. 8 a detached view of a part of the striking-works.

I will in the rst place describe the operating-handle, which I proposeto use when the gong is secured to one side of a door and has to bestruck from the opposite side of the saine.

To a hub, a, projecting from the plate A is secured the bell B, theplate, which is preferably ot' the circular form shown, being secured toa door, D. l

E is the operating-handle, an arm, E', on which passes through a slot,b, in the door D, and through a slot, d, in a plate or escutcheon, F,secured to the outside of the door, the under side of the arm having arecess, e, for the reception of the lower edge, j', ofthe slot d in theescutcheon-plate, this edge constituting the pivot of theoperating-handle, the movement of which is limited in one directionbythe stop t', and in the opposite direction by the lower stop, h. Thearm E of the oper- (Model.)

ating-handle can be passed through the slot of the escutcheon-plate whenthe latter is detached from the door; but when the eseutcheon carryingthe handle has been secured to its place, thearm E cannot be withdrawn,but

can be vibrated on the edge j' of the slotin the escutcheon-plate to anextent determined by the said stops hand t', the maintenance of therecess c ofthe arm on the edge of the slot being assured by the roundedportion '1n of the 6o arm, which is at all times nearly in contact withthe upper edge ot the slot. By this peculiar manner oi' connecting thehandle to the door through the medium ot' the slotted escutcheon-plate,I avoid the expense ot' a pivot- 6 5 pin.

Although I have referred to D as a door, it may be any other object toone side ot' which it may be convenient to attach a gong, while theoperating-handle is connected to the op- 7o posite side in the mannerdescribed.

To guides n a, in front of the plate A, is

adapted a sliding bolt, G, a detached view ot' which is shown in Fig. 8,and which has a projection, p, acted on by a spring, H, the bolt beingslotted for the reception of the arm E of the operating-handle.

A lever, I, carrying the striking-arm J, is loosely connected to theplateA in the following manner: The upper portion of the lever 8o andthereby serving to guide the same, and to serve as a pivot-pin, aspring, M, maintaining the lever in contact with a stop, t, on the saidplate A.

The normal condition ot the operating parts is that shown in Fig. ingbolt, by depressing the operating-handle, the top ot' the projection wof the said bolt catching against the under side of the projection, y,of the lever I will raise the latter; but as the upper inclined edge, c,ofthe lever bears against the lower end ofthe guide a, the said levermust necessarily be moved outward on its guiding-pivot K in thedirection of the arrow, Fig. 2, until it nally escapes from the controlof the sliding bolt, when the lever, 10o

On raising the slid- 9o owing to the spring M, will instantly fall andbe brought into such violent contact with the stop t that the elasticarm of the striker will yield and its knob will strike the bell, the armrecoilin g, however, immediately after the blow, so that the knob willbe free from actual contact with the bell. The above movements andresults are accomplished during the depression of the operating-handlein the direction of the arrow, Fig. 5, to the extent permitted by thestop h but, on relieving the handle it will immediately recover itsformer position, Fig. 5, and in doing this the bell will again bestruck, for on relieving the handle the sliding bolt will be under theinfluence of the spring H, and, being depressed by the latter, willstrike the inclined top of the lever, move the latter back, as shown inFig. 4, until the projection tu ofthe bolt passes the nose y of thelever, when, by the action of the spring M, the lever will be suddenlymoved forward and its striker will be brought into contact with thebell.

It will be seen that no fine fitting is required in making theabove-described parts and in putting them together, the bolt beingsimply adjusted to its guides and the striking-lever to its projectionson the plate A, the springs retaining both bolt and lever in theirproper positions.

The gong may be sounded by simply raising the bolt and permitting it tofall, any suitable attachments being combined with the bolt for thispurpose; but, in most cases, I propose to combine the gong with theoperating-handle E, and to apply it to a door or other object,substantially in the manner described above.

I claim as my inventionl. The combination, in a gong, of the baseplateA, a strikin g-lever, I, secured to said baseplate, so as to be freeboth to slide and vibrate, and having an inclined top, e, and projectiony, a spring, M, acting on the lever, an elevating device acting on theprojection y, and a lug or strip, n, acting on the inclined top u of thestriking-lever, as set forth.

2. The combination of the base-plate A, the strikinglever I, free toslide and vibrate and having an inclined top, t, and projection y, thespring M, the strip n, the spring-bolt G, having a projection, fw, andthe pivoted operating-lever, as set forth.

3. The combination of the striking-lever I, and mechanism for operatingthe same, with the base-plate A, having the projection q, the pivot K,with projection s, and the lug t, as specied.

In testimony whereofl have signed my name to this specification inpresence of two subscribin g witnesses.

JOSEPH W. JOHNSON.

Witnesses:

J AMES It. KENNEY, ELLWooD H. DnYsHER.

